使用多个数据对象创建具有复杂条件的规则
Creating rules having complex conditions using multiple data objects
假设我有两个数据对象 Person
和 Address
。 Person 对象具有 name
和 gender
字段,Address 对象具有 city
和 state
字段。现在我想根据这种情况采取一些行动:
when
(person.name == 'jayram' && address.city == 'barhiya') ||
(person.gender == 'M' && address.state == 'bihar')
then
do something
如何在 drools 规则文件中完成此操作?
也许这应该是解决方案:
package com.sample
dialect "mvel"
import com.sample.Person;
import com.sample.Address;
rule "Hello World"
when
person : Person( status == Message.HELLO)
Address((person.name == 'jayram' && city == 'barhiya') ||
(person.gender == 'M' && state == 'bihar'))
then
// Do something
end
假设我有两个数据对象 Person
和 Address
。 Person 对象具有 name
和 gender
字段,Address 对象具有 city
和 state
字段。现在我想根据这种情况采取一些行动:
when
(person.name == 'jayram' && address.city == 'barhiya') ||
(person.gender == 'M' && address.state == 'bihar')
then
do something
如何在 drools 规则文件中完成此操作?
也许这应该是解决方案:
package com.sample
dialect "mvel"
import com.sample.Person;
import com.sample.Address;
rule "Hello World"
when
person : Person( status == Message.HELLO)
Address((person.name == 'jayram' && city == 'barhiya') ||
(person.gender == 'M' && state == 'bihar'))
then
// Do something
end